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      02-01-2013, 08:24 PM   #19
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Drives: 2011 335d, M-Sport
Join Date: Jan 2012
Location: MD

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Originally Posted by GSXR View Post
Just out of curiosity, does anyone have the k&n drop in filter? I'm a new member lurking (hopeful future owner) and am surprised at the aftermarket availability (US) of this engine, I'm used to the cold air intakes and the only drop in k&n filters Ive used where on my bike but I have never owned a forced induction vehicle so does anyone know if it would be similar results to remove this foam piece as opposed to getting the k&n drop in? Either way, it is a pretty good free mod
Candidly, I don't think either are really going to give you any gains that would be larger than what could be considered a testing error on a dyno (or even close there-to). Some folks do have k&n, but others believe that the cost of possible reduced particulate filtration and possible oil issues are not worth the possible benefits. Many here in the diesel section cite the Spicer report.

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